Android 之ListView+Imagview設計實現單選

1。定義一個實體類

public class EntityInfo {
    private String name;
    //用來判斷當前item是否被選中
    private boolean isChick;


    public  EntityInfo(String name,boolean isChick){
        this.name=name;
        this.isChick=isChick;
    }


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public boolean isChick() {
        return isChick;
    }

    public void setChick(boolean chick) {
        isChick = chick;
    }
}

2。定義一個adpater

class  RadioButtonAdapter extends BaseAdapter{
        private Context context;
        private List<EntityInfo> listinfos;
        private LayoutInflater inflater;
        public RadioButtonAdapter(Context context,List<EntityInfo> listinfos){
            this.context=context;
            this.listinfos=listinfos;
             inflater =LayoutInflater.from(context);
        }



        @Override
        public int getCount() {
            return listinfos.size();
        }

        @Override
        public Object getItem(int position) {
            return listinfos.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            convertView= inflater.inflate(R.layout.listview_item,null);

            TextView name= (TextView) convertView.findViewById(R.id.tv_name);

            ImageView image2= (ImageView) convertView.findViewById(R.id.iv_image2);

            //
          EntityInfo info=  listinfos.get(position);

            name.setText(info.getName());
            if(info.isChick()){
                image2.setVisibility(View.VISIBLE);
            }else {
                image2.setVisibility(View.GONE);
            }

            return convertView;
        }

3。定義listview_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RelativeLayout

        android:layout_width="match_parent"
        android:layout_height="30dp">


        <TextView
            android:id="@+id/tv_name"
            android:layout_centerVertical="true"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="20dp"
            android:text="nnsdf"/>


        <FrameLayout
            android:layout_centerVertical="true"
            android:layout_marginRight="10dp"
            android:layout_alignParentRight="true"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <ImageView

                android:id="@+id/tv_image1"
                android:layout_width="20dp"
                android:layout_height="20dp"
                android:src="@mipmap/chick"/>


            <ImageView
                android:id="@+id/iv_image2"
                android:layout_width="20dp"
                android:layout_height="20dp"
                android:src="@mipmap/ischick"/>
        </FrameLayout>



    </RelativeLayout>

</LinearLayout>

4 。Maintivity處理業簡單務邏輯

public class MainActivity extends Activity {
  private ListView lv;
    List<EntityInfo>  listinfos=new ArrayList<EntityInfo>();
    private  RadioButtonAdapter madapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
                    //默認第一個選中（看需求）
        listinfos.add(new EntityInfo("第一個",true));
        listinfos.add(new EntityInfo("第二個",false));
        listinfos.add(new EntityInfo("第三個",false));
        listinfos.add(new EntityInfo("第四個",false));

        lv= (ListView) findViewById(R.id.lv);

        madapter=new RadioButtonAdapter(MainActivity.this,listinfos);
        lv.setAdapter(madapter);

        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

               EntityInfo info= (EntityInfo) madapter.getItem(position);
                Toast.makeText(MainActivity.this,info.getName(),Toast.LENGTH_LONG).show();
                //核心代碼 很簡單的邏輯
                for (EntityInfo infos : listinfos){
                    //拿到集合裏面的item和當前點擊item做比教
                        if(infos.getName().equals(info.getName())){
                            infos.setChick(true);
                        }else {
                            infos.setChick(false);
                        }
                }


                //不能少 切記
                madapter.notifyDataSetChanged();

            }
        });
    }
｝

效果圖

猛戳這裏：studio點擊下載